Experimental observation on sheath and magnetic presheath over an oblique metallic plate in presence of magnetic field

Summary form only given, as follows. Experimental observation on sheath and magnetic pre-sheath over an oblique metallic plate in presence of a magnetic field has been performed. The plate has been deployed in the plasma environment making some finite angle with the externally applied magnetic field. Studies have been carried out for various angles, magnetic field gradients and plate-biasing voltages as well. The analyses reveal that the magnetic pre-sheath thickness increases while the angle is varied from minimum to maximum; whereas the reverse happens in case of the sheath thickness. Furthermore, measurements of the sheath widths with increasing magnetic field strengths and the plate biasing voltages have been done which imply that sheath width enhances with increasing both the parameters. The electron temperature in the bulk plasma region is also evaluated for all the plasma conditions so as to find out its influence on the characteristic behavior of the sheath formation.